| Title | A comparison of cross-track ion drift measured by the swarm satellites and plasma convection velocity measured by SuperDARN |
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| Author | Koustov, A V; Lavoie, D B; Kouznetsov, A F; Burchill, J K; Knudsen, D J; Fiori, R A D |
| Source | Journal of Geophysical Research, Space Physics vol. 124, A07307, 2019 p. 1-15, https://doi.org/10.1029/2018JA026245 |
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| Year | 2019 |
| Alt Series | Natural Resources Canada, Contribution Series 20190130 |
| Publisher | American Geophysical Union (AGU) |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | pdf (Adobe® Reader®); html |
| Subjects | geophysics; extraterrestrial geology; Science and Technology; Nature and Environment; remote sensing; satellite imagery; radar methods; geomagnetism; geomagnetic fields; geomagnetic variations;
ionosphere; convection; magnetosphere; Super Dual Auroral Radar Network (SuperDARN) |
| Illustrations | graphs; geoscientific sketch maps; plots; tables; time series |
| Program | Public Safety Geoscience Northern Canada Geohazards Project |
| Released | 2019 05 17 |
| Abstract | Cross-track ion drifts measured by the Swarm A satellite are compared with collocated line?of?sight Super Dual Auroral Radar Network (SuperDARN) velocities in approximately the same directions. More
than 200 Swarm A passes over four polar cap SuperDARN radars in the Northern and Southern Hemispheres are considered. Overall, the Swarm-based velocities are larger than the SuperDARN velocities; the slope of the best fit line to the data is ~0.67.
Somewhat stronger differences are found when Swarm A measurements for the entire year 2016 are compared with SuperDARN vector data from global-scale convection maps. Swarm ion drift data demonstrate known features of the high-latitude convection
patterns, for example, reverse convection cells at interplanetary magnetic field Bz > 0. The latitudes of the convection reversal boundary inferred from SuperDARN are found to be in reasonable agreement with those determined from Swarm A and Swarm B,
with Swarm?based latitudes occurring roughly 1° more equatorward, typically. |
| GEOSCAN ID | 314819 |
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